Ore-feeder.



B. P. GUSTAFSON.

01m FEEDER. APPLICATION FILED APB..11, 1908.

Patented June 15, 1909. a snEnTs-snnn'r 1.

C. D M w m u n W m m. T n r B m o u E u r Patented June 15,1909.

3 SHEETS-SHEET 2.

i l l l l i l E. F. GUSTAFSON.

ORE FEEDER.

APPLICATION FILED APR. 11. 1909.

THE NORRIS FETIRS cm. wAsI-uuomu, n. c.

q hbweowo E. P. GUSTAFSON.

ORE FEEDER.

APPLICATION FILED Aljfilll, 1908. 925,337. Pa-fiented June 15, 1909.

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wane/mas THE NDRIRIS PETERS ca, wasnmu'mmm. c.

UNITED STATES PATENT OFFICE.

ELMER F. GUSTAFSON, OF IDAHO SPRINGS, COLORADO.

ORE-FEEDER.

To all whom it may concern:

Be it known that I, ELMER F. GUSTAFSON, a citizen of the United States,residing at Idaho Springs, in the county of Clear Creek and State ofColorado, have invented certain new and useful Improvements in Ore-Feeders; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

My invention relates to improvements in ore feeders, my object being toprovide a construction moreespecially adapted for the feeding of crushedore to stamp mills for purposes of pulverization preparatory to theseparation of its metallic values through the instrumentality of theordinary or any suitable means for the accomplishment of this object. Myimproved construction is adapted to feed the ore regularly and steadilyto the stamp mill. The disk is intermittently actuated. Every time astamp descends a part (not shown) attached to its stem engages a leverarm connected with the operating parts of the feeder whereby the saidparts are actuated for the purpose of imparting a partial rotarymovement to the disk.

Having briefly outlined my improved con struction I will proceed todescribe the same in detail reference being made to the accompanyingdrawing in which is illustrated an embodiment thereof.

In this drawing, Figure 1 is a side elevation of my ore feeder. Fig. 2is a top plan view of the same. Fig. 3 is a vertical section taken uponthe line 33 Fig. 2 viewed in the direction of the arrow. Fig. & is asection taken on the line e'll Fig. 2, viewed in the direction of thearrow, the parts being shown on a larger scale.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the hopper of my improved ore feeder, thesame being open at the top and provided with inclined side walls 6 andan inclined rear wall 7, the front wall 8 of the hopper being verticallydisposed. This hopper is open at the bottom as shown at 9 to allow theore to pass to the upper surface of the disk 10, the front wall of thehopper having an opening 12 to allow Specification of Letters Patent.

Application filed April 11, 1908.

Patented June 15, 1909.

Serial No. 426,583.

the ore to move forwardly upon the upper surface of the disk, the latterbeing normally inclined downwardly and forwardly. To the front wall ofthe hopper upon opposite sides of the opening 12, are secured two plates13 and 14 which engage the upper surfaceof the disk and extend upwardlytherefrom forming walls to prevent the es cape of the ore except fromthe lower outer edge 15 of the disk between the points where the saidplates terminate. This disk 10 is made fast to a shaft 3 which isinclined to harmonize with the inclination of the disk, the shaftoccupying a position at right angles to the plane of the disk. Thisshaft is journaled in a bearing 16 mounted upon the front wall of thehopper. Above the bearing the shaft is provided with a fast beveled gear17 having a hub 18 which rests upon the upper shoulder of the bearingaround the shaft. Through the lower extremity of the shaft or that whichprotrudes below the disk, a pin 19 or other suitable fastening device ispassed for the purpose of preventing the upward movement of the shaft.It is evident that these features are mere details and that applicant isnot limited to the specific construction set forth.

The gear 17 meshes with a similar vertically disposed gear 20 fast upona hori zontal shaft 21 journaled in bearings 22 mounted upon arms 23,secured to or formed integral with the front wall of the hopper andprojecting forwardly therefrom.

Upon the shaft 21, is made fast a wheel or drum 2a whose periphery 25forms a friction face which is located between two flanges 26 whichprotrude beyond the said face and maintain the band 27 in place. Asshown in. the drawing this band engages approximately two-thirds of theperipheral friction face of the drum, one of its extremities beingsecured at 28 to a leverarm 29 fulcrumed on the shaft 21, the arm beingreinforced as shown at 30 for this purpose. The opposite extremity ofthe band is secured as shown at 31 to a rod 32 which passes through theangle extremity 33 of an arm 34 rigidly secured to the front wall of thedisk by means of cap screws 35 passed through an angle extremity 36 ofthe arm. The rod 32 protrudes beyond the extremity 33 of the arm andthis protruding portion is surrounded by a coil spring 37 introducedbetween two washers 3S and 39, one of which engages a nut 40 applied tothe outer extremity of the rod;

while the other engages the part 33 of the rod. The rod slides freely inthe washer 29 and part 33 for a purpose hereinafter explained.

A set bolt 41 is threaded into the horizontal arm 42 of an an le bracket43 made fast to the front wall of the hopper by cap screws 44. This setbolt is adapted to protrude above the bracket and engage the innerextremity 45 of the lever 29 whereby the arm 46 of the said lever may bedepressed for the purpose of shortening the stroke.

A stem 47 is passed through openings formed in the part 42 of the anglebracket and the extremity 45 of the lever, the said stem projectingabove the lever and being surrounded by a coil spring 48 which engagesthe arm 45 of the lever at one extremity and a washer 49 engaging nuts50 applied to the opposite extremity of the stem. This spring has atendency to depress the arm 45 of the lever whereby it would normally beheld in engagement with the upper surface of the part 42 of the anglebracket 43. Then in this position the lever would be capable of makingits maximum length of stroke. To the extent that the arms 45 of thelever is raised above the angle bracket, the stroke due to the descentof the stamp (not shown) is shortened.

From the foregoing description the use and operation of my improved orefeeder will be readily understood. It'may be considered that the orefeeder is supported in suitable proximity to the stamp mill in anysuitable manner. As shown in the drawing the upper edges of the oppositeside walls of the hopper are provided with horizontally projecting lugsor fastening members '51 which may be secured to stationary beams 52located on opposite sides of the hopper and indicated by dotted lines inFig. 2.

Assuming that the material to be acted on by the feeder is dischargedinto the hopper, it will be understood that the same will passdownwardly through the opening 9 in the bottom of the hopper and comeinto contact with the upper surface of the inclined disk 10, the orenaturally moving forwardly and downwardly through the opening 12 in thefront wall of the hopper. Every time a stamp descends, a part (notshown) attached to one of its stems, engages the upper extremity of apin 53 applied to the outer end of the lever 29, and depresses the arm46 of the lever whereby the band 27 is actuated to impart a partialrotary move ment to the drum 24. This movement of the band, places thespring 37 under tension by virtue of the connection on the oppositeextremity of the band remote from the lever,

with the rod 32 as heretofore explained.-

The movement of the drum 24 imparts a corresponding movement to theshaft 21 upon which it is mounted, and also a similar movement to thegear 20 which meshing with the gear 17 actuates the latter to turn theshaft 13 and impart a corresponding movement to the disk 10. As the diskmoves in the direction indicated by arrow a in Fig. 2, the ore upon thedisk between the plates 13 and 14, is moved toward the plate 14 and aportion of it is discharged at the periphery of the disk between theplates 13 and 14. This occurs every time a partial rotary movement isimparted to the disk and the other parts as just described. As soon asthe power acting upon the lever arm 46 ceases, the spring 48 returns thelever arm to its normal position, while the spring 37 acting upon thebrake band moves the latter in the reverse direction upon the frictionface of the drum, whereby the parts are restored to their normalposition and made ready for the next descent of the stamp which actuatesthe lever and imparts the movement to the mechanism just described, eachdescent of the stamp resulting in a repetition of the aforesaidmovement.

Having thus described my invention, what I claim is:

In an ore feeder, the combination with a hopper and a disk connected inoperative relation, a short shaft upon which said disk is journaled insuitable proximity to the hopper, a counter shaft, a lever fulcrumed onthe counter shaft a wheel drum mounted on the counter shaft and having afriction face, a band engaging the friction face of the drum, oneextremity of the band being connected with the lever, tension meansconnected with the other extremity of the band, an adjustable screwlocated near the inner extremity of the lever for determining themovement thereof, the lever being capable of movement to actuate theband and impart a partial rotary movement to the drum, a suitableoperative connection between the drum and the ore disk shaft, andtension means mounted on the inner extremity of the lever for returningthe said lever to its normal position, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ELMER F. GUSTAFSON.

\Vitnesses A. J. OBRIEN, DENA NELSON.

